Cylinder structure for internal-combustion engines



H. R. SETZ CYLINDER STRUCTURE FOR INTERNAL COMBUSTION ENGINES April 5 1927. 1,623,639 7 Filed Sept. 4, 1924 3 Sheets-Sheetl u x I 1 I q 1, u. v. I m U A til 5 1927. p H. R. SETZ CYLINDER STRUCTURE FOR INTERNAL COMBUSTION ENGINES Filed Sept. 4. 92 3 Sheets-Sheetz .MQDR m m m t r u w e 4 5 g 5 U m H. m D v w. H a a N k u U M w W M m Wfl w w A ril 5 1927.

P H. R. SETZ cypmmm STRUCTURE FOR INTERNAL comsuswxon ENGINES Filed Sept. A. 1924 3 Sheets-5heet 5 I IF.

FIG-5:

WITNESS.

Patented A r. 5, 1927.

ALJUNITED srAT S PATENT OFFICE.

HANS n. snrz, or trees DARBY 'rownsrrrr, rii'i'tnnnnPHIA COUNTY, PENNSYL- VA1\TIA; BERTHA n. sn'rz ADMINISTRATRIX or SAID HANS R. SETZ, nnonnsnn.

CYLINDER STRUCTURE FOR INTERNAL COMBUSTION ENGINES.

Application filed. September My invention relates to an improvement 7 in internal combustion engines and more particularly to engines of the Diesel type, having in the inner wall a cylinder liner formed intwo coaxial parts as is preferred in double acting engines.

1nv engines having the cylinder liners formed in two co-axial parts, the liners are supported by a surrounding jacket wall which is a rigid structure and transmits the full Working load developed in the cylinder, provision being made for the liner members to contract and expand lengthwise at their adjacent ends.

The strains put upon the jacket wall are considerable and involved and when scavenging and exhaust passages pass through the jacket wall, it is necessary to resortto a complicated casting of heayy wall section, which, due to the'passages, is'in operation unevenly heated which with a jacket wall as rigid as strength requires inevitably results in warping of the cylinder; Further, since an appreciable amount of heat created by the burning of the charge in the cylinder passes to the jacket wall, this wall is caused to expand and its lengthis ca'usedto change to an extent far in excess of what is permissible from the standpoint of precise adjustment of the valve operating mechanism.

Various more or less unsuccessful attempts have been made, heretofore, with a View to overcoming the disadvantages of known structures. For example, tie rodshave been utilized to put the jacket under an initial compressive strain in excess of the maximum working strain; while this reversal in the direction of the load application is of some benefit as far as strain conditions are'concerned, it fails to remedy the defects arising from heating of the jacket.

Now it is the object of my invention to 1 provide a cylinder structure in which neither the cylinder liner nor the jacket walls are subjected to either positive or negative longitudinal strains, but are permitted respectively to expand and contract freely, entirely in response to the temperature changes and in such manner that the extreme ends of the cylinderwill remain-fixed under any operating conditions as well as when the engine iscold. r V

Having now indicated in a general way the nature,- purpose and advantages of my 4, 1924. Serial No. 735,767.

invention, I'will proceed to a detailed description of a preferred embodiment thereof, and certain modifications, with reference to the accompanying drawings, in which:

Figure l is a side elevation of a cylinder structure embodying my invention.

Figure 2 is a transverse sectional view of the subject matter of Figure 1.

F1gures 3, 4 and 5 are transverse sectional views showing cylinder structures embodying respectivelymodifications of the embodi men-t of my invention illustrated in Figures 1 and 2. i

In the several figures A indicates an upper cylinder liner section and A a lower cylinder liner section co-axial with the liner A. while B and B respectively indicate upper and lower jacket wallsections. The liner sections A and A are respectively held rigidly in the respective jackets B, B by means of interengaging flanges, as shown in the several figures, and the end of the cylinder are closed by means of suitable heads not shown. I l

The outer end of each of the cylinder separate members as shown or may be formed integral with the entablature of either the upper or lower jacket.

The entablature C rests on the engine frame F and the two-entablatures and distance pieces are held together and to the engine frame by means of tie rods G which may be anchored in the engine frame or pass clear through to the bed plates.

Referring now more particularly to Figures l and 2 in which I have illustrated an I adaptation of my invention to a port scavenging two cycle engine, the inner or free end of jacket B is provided with a flange 4 against which is bolted a water jacket belt section H containing scavenging port I and exhaust port J which respectively coordinate with ports I and J cut through the adjacent ends of the cylinder liners. At its lower end the belt section H is bored out to form a sliding lit over the inner or free end Z; of jacket B, the joint being made water tight by means of packing rings 0 recessed in the jacket wall.

The inner wall of the belt section is made to en age the inner or adjacent ends of the cylinder liners A and A with a sliding fit, the joints being made tight by means of packing rings (Z recessed in-the belt section.

Plates K form closures for the entablature thereby forming an enclosure which may be used as a scavenging air receiver which completely surrounds the cylinder jacket over substantially its entire length.

From the above description of Figures 1 and 2 it will be noted that by virtue of my invention there is provided a structure in which the cylinder liner members may expand relative to each other and to the jacket wall and in which the jacket wall formed with an. entablature for the support of the cylinder may also freely expand and contract longitudinally under heat without throwing any strain upon the cylinders or upon. itself.

Referring now to Figure 3 in which I have shown a modified application of my invention:

The lower or free end a of the jacket wall B has formed integral with it the belt section H, the lower end of the jacket engaging the free end of jacket B with a sliding fit as in Figures 1 and 2, and it will be observed that the inner or free ends of the jacket walls are free to expand and contract longitudinally.

Referring now to Figure at in which I have illustrated a further embodiment of my invention, and in which the belt Section I is not fastened to either of the jacket walls B, 1%, but is as it were suspended between the jacket walls, sliding joints between the jacket walls and the belt section II being made water tight by means of packing rings 6.

Referring now to Figure 5 in which 1 have illustrated a further embodiment of my invention to a cylinder structure adaptable to a four cycle engine. In the structure shown the inner or free end of the jacket walls B, B are provided with flanges as at f, f to supply sliding support to the cylinder liner members, the inner or free ends of the jacket members B, B being spaced apart, and the joint made water tight by means 01": a packing ring 9.

I-Iavin now fully described my invention, what I claim and desire to protect by Letters Patent is:

1. In a cylinder structure for internal combustion engines, in combination, a cylinder comprising an inner liner and an outer jacket, upper and lower entablatures between which the cylinder extends, distance pieces connecting the entablatures and spaced from the outer jacket of the cylinder and tie rods cooperating with the entablatures and distance pieces to form a rigid cylinder-supporting frame, the liner of the cylinder comprising two liner sections secured respectively at their upper and lower ends in rigid relationio thejacket and entablatures and free at their approximating ends to expand and contract longitudinally.

2. In a cylinder structure for internal combustion engines, in combination, a cylinder comprising an inner liner and an outer jacket, upper and lower cntablatm'e between which the cylinder extcnds, distance pieces connecting the enlablatures and spaced from the outer jacket of the cylinder and tie rods cooperating with the cut-ablatures and distance pieces to form a rigid cylinder-supporting frame. the liner of the cylinder and the outer jacket each comprising two sections secured respectively at their upper and lower ends in rigid relation to the entablatures and free at iheir approximating ends to expand and contract independently in a longitudinal direction.

3. A cylinder structure for internal combuStion engines comprising in combination co-axial cylinder liners, cylinder wall members, means to rigidly connect the liners and wall members at their outer ends, means to absorb the working strains through the outer ends of the wall members and means for connecting the inner ends of the liners and walls so as to permit the walls and liners to expand and contract independently in a longitudinal direction under the influence of heat.

i. A cylinder structure for internal -ombustion engines having an inner wall composed of two co-axial sections, a jacket wall composed of a plurality of sections and means for rigidly connecting the outer ends of the wall sections, their inner ends being free to adjust themselves independently in a longitudinal direction.

5. A cylinder structure for internal combustion engines comprising in combination a pair of co-axial cylinder liners, a pair of jacket wall members adapted to support said liners, said jacket wall members havingiheir outer ends formed respectively into cntabla tures, their inner ends being free.

6. A cylinder structure for internal coinbustion engines comprising two co-axial inner wall sections, two jacket wall sections in fixed engagement at their outer ends with the outer ends of said inner wall sections, means for slidably centering the free ends of said wall sections, and separate means for carrying the working loads set up in the engine cylinder.

tween the inner ends of said jacket wall members in which said cylinders are respectively supported, the adjacent ends of said liners being free to expand and' contract, one end of each of said jacket wall members being formed into an entablature and secured to the engine frame, the other end of each jacket wall member being free to expand and contract.

9. A cylinder structure for internal combustion engines comprising incombination a pair of co-axial cylinder liners, a pair of jacket wall members, the outer ends of which are formed into entablatures, means afiording a fixed connection between the jacket wall members, and the cylinder liners respectively at opposite ends of said liners, means affording sliding connections between the cylinder liners and the jacket Wall members at adjacent ends of the cylinder liners and means affording a sliding connection bejacket wall members. 7

10. A cylinder structure for internal combustion engines comprising in combination a pair of coaxial cylinder liners, the inner ends of which are spaced apart, a pair of jacket wall members, entablatures formed by the outer ends of said jacket wall members,

means to rigidly secure opposite ends or" said cylinder liners to said jacket walls adjacent said entablatures, a belt section slidably connected to said cylinder liners at their adjacent ends and means affording a sliding connection between said belt section and" the inner end of one of said jacket wall members.

11; A cylinder structure for internal'combustion engines comprising in combination a pair of-co-axial cylinder liners, a pair of jacket wall members, entablatures formed by the outer ends of said wall members,

, means engaging said entablatures and adapted to support one above the other, means aiiording a rigid connection between opposite ends of said cylinder liners and entablatures respectively, and a belt section engaging the inner ends of said wall members and slid cylinder liners.

12. A cylinder structure for internal combustion engines comprising in combination a pair of co-axialcylinder liners, a pair of jacket wall members, entablatures formed by the outer ends of said wall members, means engagin said entablatures and adapted to support one above the other, means affording a rigid connection between opposite ends of said cylinder liners and entablatures respectively, means affording a sliding engagement between the inner ends of said wall members and the adjacent ends of said cylinder liners whereby said cylinder liners will be supported by said jacket walls with their adjacent ends in spaced relationship so that said liners and jacket walls will be free to contract and expand under the influence of heat.

13. A cylinder structure for internal combustion engines comprising a pair of co -axial cylinder liners a pair of jacket wall members, the outer ends of which form supporting entablatures and the inner ends of which are free, means to rigidly secure said liners to said wall members respectively at opposite ends thereof and means affording, a sliding connection between the free ends of said wall members and adjacent ends of said liners.

ably engaging the adjacent ends of said 14: A cylinder structure for internal combustion engines comprising in combination a pair of co-axial cylinder liners having scavenging and exhaust ports found therein, a pair of jacket wall members, the outer ends of which form entablatures, means adapted to engage said entablatures for the support of the cylinder structures, means forming rigid connections between the outer ends of the cylinder linersand said entablatures, a belt section provided with scavenging and exhaust ports adapted to align with said ports in the cylinder liners, means adapted to secure said belt section to the inner end of one ofsaid wall members and means affording sliding connections between said belt section and the inner end of the other wall member and between said belt section and said cylinder liners, adjacent their inner ends, whereby said wall members and said cylinder liners may be free to expand and contract longitudinally under the influence of heat. A

In testimony of which invention, I have hereunto set my hand, at Chester, Pennsylvania, onthis 29th day of August, 1924.

HANS R. SETZ. 

